UNITED NATIONS - Violence in Afghanistan hit a high last month with at least 368 civilians dead in May, United Nations officials say. Besides those civilians killed in conflicts between anti-government and pro-government forces in Afghanistan last month, at least 600 people were injured, the UN reported Sunday. The anti-government forces have been responsible for most of the bloodshed, including 82 percent of the deaths. Improvised explosive devices being used by the anti-government forces caused the most casualties, 41 percent of deaths.